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So in principle you might use a top500 supercomputer where your performance is achieved. …

In practice C++ programs are expecting some compiler optimizations. Look notably into the standard headers of your standard containers implementations. With GCC, you could ask for the preprocessed fo …

You could log to some sqlite database (or find some specialized logging library, there are many of them). You could decide for a more structured format of your log file. For example, use JSON, YAML, …

Copying generational garbage collectors in practice performs usually well (read about Cheney's algorithm, then read the GC handbook), and favors quick allocation and en masse disposal of young, tempor …

It might worth to recompile your (or some free software) source code when upgrading your processor, but you'll usually only win a few percents of performance in doing so. …

You could use sqlite. It can store a lot of rows and work on many operating systems (Windows, Linux, Android, MacOSX). You could consider installing and using some Linux system on that single PC and …

If you care only about efficiency, here is a standard conforming and very efficient implementation: void* malloc(size_t sz) { errno = ENOMEM; return NULL; } void free(void*p) { if (p != NULL) …

Of course SQLite performance depends (like all SQL databases) a lot of the number and width of tables, their indexes, the SQL queries involved. …

(since you code in PHP, I am guessing that the Excel file is uploaded in some browser, so is coming from the Internet; if it is not the case, ignore my answer) Is it better practice to store the p …

There is of course a performance penalty, but it is probably much lower than using explicit mutexes (à la std::mutex). …

It is not related to game programming. Some scientific code can also use both the GPU and the CPU. With careful -and painful- programming, e.g. by using OpenCL or CUDA, you could load both your GPU a …

The database can only hold 1 write concurrently and does not support transactions Lack of transaction is the main issue. I would suggest: If possible, update to a different RDBMS capable of tra …

Can we make general statements about the performance of interpreted code vs compiled code? Programming languages are specifications (written in some report, such as R5RS or n1570). … They are not software, so it does not even make sense to speak of performance. But some programming language may have several implementations, including interpreters and compilers. …

When used properly, they could improve overall performance. And it seems that you are reinventing csplit(1) or split(1). Why are they not enough for your needs? … I can't imagine a situation where such a splitting performance matters a lot (to the point of justifying several days of your work time). You need to explain your context, and motivate it much more. …

Regarding performance, try several ways and measure i.e. benchmark them (don't forget to enable optimizations in your compiler), and choose the best. …